But, that's not all: The sheik is also in discussions with Extell Development about buying four full-floor condos in the 90-story One57 building for extra room for his two wives, 15 children and a massive entourage.

At one point, they were talking about doing it in pieces, like four separate units, the four top floors, so no one knows about it, a person with knowledge of the deal said.

The extra condos would bring the total purchase price to about $250 million.

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